Diffraction Grating 50 Lines Optical Spectrophotometer for Teaching Experiment

High Precision Diffraction Grating with Multiple Line Options for Teaching

Diffraction Grating for Spectroscopy Experiment with Multiple Line Options

Transmission Grating for Optical Teaching with Various Line Numbers Offered

Optical Diffraction Grating Spectrophotometer with Multiple Line Options

Optical Diffraction Grating Spectrophotometer for Teaching Demonstrations

Optical Diffraction Grating for Spectroscopy and Teaching Demonstrations